Multi-effect falling film evaporator adopts the principle of falling film type evaporation. It heats up rare solution to boiling point so that some moisture is boiled away; thus reaching to the aim of condensation. This machine unit adopts continuous production. It has the advantages of large condensing ratio (1/5-1/10), broad scope of viscidity (<400CP), good effect of heat transfer and large processing capacity etc.. It is suitable for evaporating the material that is heat sensitive, higher in consistency, large in viscidity and corrosive, also is suitable for condensing corn steep liquor and malt dust in the industry of starch, syrup and monosodium glutamate liquor in foodstuff, milk, sugar and lees filtrate.

This unit has bigger coefficient of heat transfer, so the temperature difference for heat transfer is little. It may assemble to dual-effect, triple-effect, four-effect or five-effect evaporating system according to the properties of evaporating material and different evaporating objectives, as well as may make use of waste vapor on the top of pipe bundle or disc type drying machine and other low heat source (such as coagulated water vapor) to act as waste heat evaporator, which reduces steam consumption greatly and reaches the effect of saving energy. If waste heat vapor is supplied enough, it needn’t any live steam, thus getting remarkable economical benefit.